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Leases (Tables)
 3 Months Ended
Mar. 31, 2020
Lease [Abstract]  
Components of Lease Expense
Lease expense is charged to selling, general and administrative expenses. Components of lease expense were as follows (in thousands):

  
Three Months Ended
March 31,
 
  
2020
  
2019
 
Operating lease cost
 
$
10,431
  
$
10,228
 
Short-term lease cost
  
—
   
10
 
Variable lease cost
  
1,615
   
1,531
 
Total lease expense
 
$
12,046
  
$
11,769
 
Supplemental Cash Flow Information Related to Leases
Supplemental cash flow information related to leases is as follows (in thousands):

  
Three Months Ended
March 31,
 
  
2020
  
2019
 
Cash paid for amounts included in the measurement of lease liabilities:
      
Operating cash flows from operating leases
 
$
9,996
  
$
9,872
 
Right-of-use assets obtained in exchange for lease obligations:
        
Operating leases
 
$
12,043
  
$
17,747